code: def _read(self, name):
      try:
          return self._values[name]
      except KeyError:
          raise LookupError(f"Unrecognized config option: {name}")
  
file_path: flax/flax/configurations.py
imports: import os
  from contextlib import contextmanager
  from typing import Any, Generic, NoReturn, TypeVar, overload
label_desc: Use image node_id 3 for calling the Config obj's underlying member method code with example usage: obj._read(name) and returns: self